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#pragma once
/* "kernel" utility things */
/* fprintf */
#define fprintf(fd, fmt, args...) dbg(DBG_TEST, fmt, ##args)
#define printf(fmt, args...) dbg(DBG_TEST, fmt, ##args)
/* errno */
#define errno (curthr->kt_errno)
/* malloc/free */
#define malloc kmalloc
#define free kfree
/* The "kernel" system calls */
#define ksyscall(name, formal, actual) \
static long ksys_##name formal \
{ \
long ret = do_##name actual; \
if (ret < 0) \
{ \
errno = -ret; \
return -1; \
} \
return ret; \
}
ksyscall(close, (int fd), (fd))
ksyscall(read, (int fd, void *buf, size_t nbytes), (fd, buf, nbytes))
ksyscall(write, (int fd, const void *buf, size_t nbytes),
(fd, buf, nbytes))
ksyscall(dup, (int fd), (fd))
ksyscall(dup2, (int ofd, int nfd), (ofd, nfd))
ksyscall(mkdir, (const char *path), (path))
ksyscall(rmdir, (const char *path), (path))
ksyscall(link, (const char *old, const char *new),
(old, new))
ksyscall(unlink, (const char *path), (path))
ksyscall(rename,
(const char *oldpath,
const char *newpath),
(oldpath, newpath))
ksyscall(chdir, (const char *path),
(path))
ksyscall(lseek,
(int fd, int offset,
int whence),
(fd, offset, whence))
ksyscall(getdent,
(int fd,
struct dirent *dirp),
(fd, dirp))
ksyscall(stat,
(const char *path,
struct stat *uf),
(path, uf))
ksyscall(open,
(const char
*filename,
int flags),
(filename,
flags))
#define ksys_exit do_exit
long ksys_getdents(
int fd,
struct dirent
*dirp,
unsigned int
count)
{
size_t numbytesread = 0;
int nbr = 0;
dirent_t tempdirent;
if (count < sizeof(dirent_t))
{
curthr->kt_errno = EINVAL;
return -1;
}
while (numbytesread < count)
{
if ((nbr = do_getdent(fd, &tempdirent)) < 0)
{
curthr->kt_errno = -nbr;
return -1;
}
if (nbr == 0)
{
return numbytesread;
}
memcpy(dirp, &tempdirent, sizeof(dirent_t));
KASSERT(nbr == sizeof(dirent_t));
dirp++;
numbytesread += nbr;
}
return numbytesread;
}
/*
* Redirect system calls to kernel system calls.
*/
#define mkdir(a, b) ksys_mkdir(a)
#define rmdir ksys_rmdir
#define mount ksys_mount
#define umount ksys_umount
#define open(a, b, c) ksys_open(a, b)
#define close ksys_close
#define link ksys_link
#define rename ksys_rename
#define unlink ksys_unlink
#define read ksys_read
#define write ksys_write
#define lseek ksys_lseek
#define dup ksys_dup
#define dup2 ksys_dup2
#define chdir ksys_chdir
#define stat(a, b) ksys_stat(a, b)
#define getdents(a, b, c) ksys_getdents(a, b, c)
#define exit(a) ksys_exit(a)
/* Random numbers */
/* Random int between lo and hi inclusive */
#define RAND_MAX INT_MAX
#define RANDOM(lo, hi) \
((lo) + \
(((hi) - (lo) + 1) * (randseed = (randseed * 4096 + 150889) % 714025)) / \
714025)
static unsigned long long randseed = 123456L;
static unsigned long long rand(void)
{
randseed = (randseed * 4096 + 150889) % RAND_MAX;
return randseed;
}
static void srand(unsigned int seed) { randseed = seed; }
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